SB20260424208 - Out-of-bounds write in Linux kernel intel iavf driver
Published: April 24, 2026
Security Bulletin ID
SB20260424208
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-31505)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to out-of-bounds write in iavf_get_ethtool_stats() when handling concurrent ethtool channel and statistics operations. A local user can issue crafted ethtool requests to cause a denial of service.
The issue can be triggered when "ethtool -L" and "ethtool -S" are executed simultaneously during queue reconfiguration.
Remediation
Install update from vendor's website.